- Nucleic Acids Research 20(1):137 (1992)
- GI Jahrestagung 1, volume 50 of LNI, page 321-325. GI, (2004)
- BTW, volume 144 of LNI, page 387-406. GI, (2009)
- BTW, volume 180 of LNI, page 710-713. GI, (2011)
- BTW, volume 180 of LNI, page 85-104. GI, (2011)
- INTERSPEECH, ISCA, (2006)
- i-com 2(2):21-28 (2003)
- Computer Science - R&D 25(3-4):235-246 (2010)
- GI Jahrestagung 2, volume 176 of LNI, page 404-409. GI, (2010)
- Grundlagen von Datenbanken, volume 02/2007 of Technical Report, page 67-71. School of Information Technology, International University in Germany, (2007)
- GI Jahrestagung, volume 154 of LNI, page 2000-2014. GI, (2009)
- DEXA 1, volume 6261 of Lecture Notes in Computer Science, page 261-268. Springer, (2010)
- GI Jahrestagung, page 2000-2014. (2009)
- Computer Science - Research and Development (2006)
- Collaborative Technologies and Systems, (2003)
- Grundlagen von Datenbanken, volume 01/2008 of Technical Report, page 86-90. School of Information Technology, International University in Germany, (2008)
- Grundlagen von Datenbanken, volume 01/2008 of Technical Report, page 36-40. School of Information Technology, International University in Germany, (2008)
- Proceedings of the 5th European Semantic Web Conference, Berlin, Heidelberg, Springer Verlag, (June 2008)
- ESWC, volume 5021 of Lecture Notes in Computer Science, page 448-462. Springer, (2008)
- SEUH, page 45-58. dpunkt, (2007)


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